dimitr
fe6d0c93b3
Correction for one of my prior optimizer commits.
2010-03-16 05:01:57 +00:00
asfernandes
d3ad05b7eb
Misc
2010-03-14 15:33:06 +00:00
dimitr
c65e55c9e6
Fixed CORE-1550: Unnecessary index scan happens when the same index is mapped to both WHERE and ORDER BY clauses.
2010-03-11 10:03:32 +00:00
dimitr
76a9a59469
Reduced number of local variables. Thanks to Claudio.
2010-03-09 16:55:05 +00:00
robocop
be3660d221
Misc.
2010-03-07 04:30:35 +00:00
dimitr
413f771766
Actually, the optimizer doesn't need an expression index request to operate.
...
Moreover, I have a feeling that calling EVL from OPT is a bad design.
2010-02-26 09:51:48 +00:00
dimitr
42fbd2615b
Front ported CORE-2833: Changing data that affects an expression index that contains references to null date fields fails.
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Also, removed the duplicated (and, at the first glance, unnecessary) code that forced us to deal with the already_attached flag. To be tested in the field.
2010-02-26 09:02:22 +00:00
asfernandes
4f9b9161b4
Feature CORE-2006 - SUBSTRING with regular expression (SIMILAR TO) capability
2010-02-21 01:47:54 +00:00
dimitr
9b7f40c1f0
Minor code unification.
2010-02-20 06:39:35 +00:00
dimitr
c7853fa9e1
Fixed CORE-1295: Bad optimization of queries with DB_KEY.
2010-02-19 20:25:56 +00:00
dimitr
faae1821f5
More optimizations for window expressions.
2010-02-16 08:57:35 +00:00
robocop
835750a54c
Misc.
2010-02-16 08:53:31 +00:00
asfernandes
c737d6a807
Create ExprNode class hierarchy.
...
Convert CONCATENATE and aggregate functions to it.
Fix some bugs:
- select sum(n) over (order by n2), sum(n) over (), n, n2 from x1;
- select (select 1 from x1 b where list(1, a.n) = 1) from x1 a;
2010-02-13 20:29:29 +00:00
dimitr
ccac0eac72
Fixed CORE-2822: Error "no current row for fetch operation" when subquery includes a non-trivial derived table.
2010-01-22 14:05:46 +00:00
dimitr
e2aab75891
Fixed the optimizer in regard to the partitioned window functions.
2010-01-19 07:52:38 +00:00
dimitr
df53be29bf
Misc.
2010-01-18 11:39:34 +00:00
dimitr
5186898135
Misc.
2010-01-15 11:40:08 +00:00
dimitr
b795f91267
Misc.
2010-01-14 08:42:33 +00:00
asfernandes
d8c99a9be2
1) Make procedures and functions member of the same hierarchy (Routine class)
...
2) Some completion for external functions
2009-12-27 22:05:22 +00:00
dimitr
37b3b13956
Misc.
2009-12-14 16:43:47 +00:00
robocop
dae574f7f1
Misc, style and unused vars.
2009-12-13 10:41:53 +00:00
dimitr
753f4d62d5
Fixed the plan output (reversed order of view sub-elements) in HEAD (also broken by my yesterday's commit).
2009-12-10 15:03:56 +00:00
dimitr
916d9fab98
Fixed the plan output (table names) in HEAD (broken by my yesterday's commit).
2009-12-10 14:48:42 +00:00
dimitr
11495a55fb
Refactored the whole RSB stuff into classes. They're inside the /recsrc sub-directory now.
...
Fixed the layering for WITH LOCK and (partially) ANY/ALL predicates.
Cleaned up the outdated code that never worked (mapping DISTINCT to an index, some VMS remainings).
Wiped out a lot of the pre-ODS11 optimizer logic. Some minor adjustments there.
Re-implemented the full outer join from scratch. This resolves CORE-2678 (full outer join cannot use available indices).
Resolved CORE-2796: DB_KEY is always zero for external tables.
Implemented the core part of the scrollable PSQL cursors. Implementation is still incomplete, but ready for testing.
Some other changes I don't recall at the moment ;-)
WARNING! The engine may be unstable. Please email me about any issues found.
2009-12-09 18:45:44 +00:00
asfernandes
a3dd1d0482
Misc
2009-11-26 00:20:59 +00:00
robocop
804ad6048a
Restrict us to ODS11 and ODS12 until the dust settles down.
2009-11-24 11:42:56 +00:00
dimitr
e6909de7f7
Wipe out the SCROLLABLE_CURSORS code + minor cleanup.
...
Also, surfaced scrollability for PSQL cursors (without internal support yet).
2009-10-31 06:25:01 +00:00
dimitr
3a3512da8e
Fixed CORE-2659: Sub-optimal (not indexed) query plan for outer joins involving complex views.
...
We don't need to validate all the view streams inside the optimizer, just those inside the e_derived_expr_expr argument.
2009-10-03 11:37:46 +00:00
robocop
3e66cd45f5
Comments.
2009-08-20 11:18:57 +00:00
dimitr
17b630c1fe
More optimizer adjustments + named constants instead of hardcoded numbers.
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In particular, this commit should resolve the degraded restore performance.
2009-08-19 09:18:30 +00:00
dimitr
ee941f9a3d
Misc.
2009-07-08 15:09:47 +00:00
robocop
f7bf07d9be
Style.
2009-07-03 11:02:17 +00:00
uid32383
e704280a59
Style.
2009-06-28 10:29:36 +00:00
dimitr
77dce5ac12
Fixed some issues with the optimizer, namely: (1) incorrect cost calculation for indexed retrievals in joins and (2) too pessimistic heuristics for indices with zero selectivity.
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Also, I removed the restricition I put recently to address some issues reported in the tracker (it's no longer necessary).
2009-06-19 11:33:12 +00:00
dimitr
a082a6fba6
Slightly changed a bugfix for CORE-2078 to avoid affecting indexed retrievals.
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It's a compromise targeted to resolve any regressions in v2.1.2 (like CORE-2411).
2009-05-14 15:41:48 +00:00
robocop
66b1227b22
Unused params, some formatting, cleanup.
2009-05-01 17:21:36 +00:00
robocop
888000e21e
Unused function params.
2009-04-26 10:24:44 +00:00
robocop
a730fbf074
Get rid of more typedefs.
2009-04-03 10:07:55 +00:00
robocop
3689f15321
Style.
2009-01-20 08:33:59 +00:00
robocop
582cdf185b
Style.
2009-01-14 09:19:00 +00:00
robocop
6406e45337
Shut up compiler warnings (unreferenced vars, uninitialized vars, compile-time conditional code, etc.)
2009-01-02 06:36:12 +00:00
asfernandes
5c97a235e3
Misc
2008-12-24 00:32:49 +00:00
robocop
2fadc0e456
Style.
2008-12-22 09:00:05 +00:00
asfernandes
5311dd5a5e
Misc
2008-12-20 19:57:43 +00:00
robocop
9161be9116
Style.
2008-12-18 11:29:10 +00:00
dimitr
4fabeb3c6a
Misc.
2008-11-23 12:53:29 +00:00
dimitr
6e4c0cd099
A better solution for CORE-2200 (Extremely slow executing a cross join of 3 tables in Firebird 2.X).
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This time an optimizer level one.
2008-11-23 12:49:33 +00:00
alexpeshkoff
d8ea120ded
AIX port - use FB_ prefix for alignment constants
2008-11-05 11:26:23 +00:00
robocop
43ee87b07d
Misc.
2008-10-21 04:25:49 +00:00
asfernandes
ad716e38d9
Misc
2008-10-20 23:46:46 +00:00
